Expandable packing device

ABSTRACT

The present invention relates to an expandable packing device applied to a paper holder, a portfolio, a diary, a PP file or the like. The expandable packing device includes a first sheet, a second sheet kept extended from a first edge of the first sheet, a first expandable part disposed between the first sheet and second sheet, a third sheet kept extended from a second edge of the first sheet adjacent to the first edge, a second expandable part disposed between the first sheet and the third sheet, wherein the second sheet and the third sheet are kept spaced with the first sheet and secured with each other, so as to form an expandable holding space with the first sheet.

FIELD OF THE INVENTION

[0001] The present invention is related to an expandable packing device and more particularly, to an expandable packing device applied to a paper holder, a portfolio, a diary, a PP file or the like.

BACKGROUND OF THE INVENTION

[0002] Please refer to FIG. 1. FIG. 1 illustrates a paper holder of the prior art. Typically, a paper holder 10 includes a cover sheet 11, a first inner sheet 13, a bottom sheet 15, and a second inner sheet 17. The first inner sheet 13 with an area smaller than that of the cover sheet 11 is secured on the inner surface 12 of the cover sheet 11 along two edges A and B so as to provide a space between the cover sheet 11 and the first inner sheet 13 for holding papers. The bottom sheet 15 extends from the cover sheet 11 and has the same area as that of the cover sheet 11. And the second inner sheet 17 has the same area as that of the first inner sheet 13 which is secured on the inner surface 14 of the bottom sheet 15 along two edges C and D so as to provide a space between the bottom sheet 15 and the second inner sheet 17 for holding papers 19.

[0003] According to the prior art, the space between the cover sheet 11 and the first inner sheet 13 and that between the bottom sheet 14 and the second inner sheet 17 is limited and merely can hold a few papers. If a large number of papers are forced to be put into the space, all papers would be jammed in the space and hard to be taken out. Furthermore, the first inner sheet 13 and the cover sheet 11 are secured together along two edges, and so do the second inner sheet 17 and the bottom sheet 14. That would take a lot of time and cost a lot to manufacture the paper holder according to the prior art.

[0004] Therefore, it is tried to rectify this drawback by the present applicant.

SUMMARY OF THE INVENTION

[0005] It is therefore a first primary objective of the present invention to provide a expandable packing device including a first sheet, a second sheet kept extended from a first edge of the first sheet, a first expandable part disposed between the first sheet and second sheet, a third sheet kept extended from a second edge of the first sheet adjacent to the first edge, a second expandable part disposed between the first sheet and the third sheet, wherein the second sheet and the third sheet are kept spaced with the first sheet and secured with each other, so as to form an expandable holding space with the first sheet.

[0006] It is therefore a second primary objective of the present invention to provide a expandable packing device including a first sheet, a second sheet kept extended from a first edge of the first sheet, a third sheet kept extended from a second edge of the first sheet opposite to the first edge, a fourth sheet kept extended from a third edge of the first sheet, a first expandable part disposed between the first sheet and second sheet, a second expandable part disposed between the first sheet and third sheet, and a third expandable part disposed between the first sheet and fourth sheet, wherein the second sheet, the third sheet and the fourth sheet are kept spaced with the first sheet, and the second sheet and the third sheet are simultaneously secured with the fourth sheet, so as to form an expandable holding space with the first sheet.

[0007] It is therefore third primary objective of the present invention to provide a expandable packing device including a first sheet, a second sheet kept extended from a first edge of the first sheet, a third sheet kept extended from a second edge adjacent to the first edge of the first sheet, a first expandable part disposed between the first sheet and second sheet, a fourth sheet kept extended from a third edge of the first sheet, a fifth sheet kept extended from a fourth edge of the first sheet, a second expandable part disposed between the first sheet and third sheet, wherein the second sheet and the third sheet are kept spaced with the first sheet and secured with each other, so as to form an expandable holding space with the first sheet, a third expandable part disposed between the first sheet and fourth sheet, and a fourth expandable part disposed between the first sheet and fifth sheet, wherein the fourth sheet and the fifth sheet are kept spaced with the first sheet and secured with each other, so as to form an expandable holding space with the first sheet.

[0008] Certainly, the expandable packing device can be a paper holder.

[0009] Certainly, the expandable packing device can be a portfolio.

[0010] Certainly, the expandable packing device can be a diary.

[0011] Certainly, the expandable packing device can be a PP file.

[0012] Certainly, the first expandable part and the second expandable part can be formed by means of pressing.

[0013] Certainly, the second sheet and the third sheet are secured to each other by means of hooking.

[0014] Preferably, the second sheet further includes a hooked opening, the third sheet further includes a hooking part engaged in the hooked opening.

[0015] Preferably, the second sheet and the third sheet are foldable, so as to form an expandable holding space with each face of the first sheet.

[0016] Preferably, the second sheet and the third sheet are secured to each other by means of hot pressing.

[0017] Preferably, the first sheet, the second sheet, the third sheet, the first expandable part and the second expandable part are of a unity.

[0018] The foregoing and other features and advantages of the present invention will be more clearly understood through the following descriptions with reference to the drawings, wherein:

BRIEF DESCRIPTION OF THE DRAWING

[0019]FIG. 1 illustrates a paper holder of the prior art;

[0020] FIGS. 2(a) and 2(b) illustrate a preferred embodiment of the present invention of a paper holder;

[0021] FIGS. 3(a) and 3(b) illustrate other preferred embodiments of the present invention of paper holders;

[0022]FIG. 4 illustrates other preferred embodiment of the present invention of a portfolio; and

[0023]FIG. 5 illustrates other preferred embodiment of the present invention of a diary.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Please refer to FIGS. 2(a) and 2(b). They illustrate a preferred embodiment of the present invention of a paper holder. The paper holder 20 includes a first sheet 21, a second sheet 22, a first expandable part 24 disposed between the first sheet 21 and second sheet 22, a third sheet 23, a second expandable part 25 disposed between the first sheet 21 and the third sheet 23. The second sheet 22 and the third sheet 23 respectively keep extended from a first edge and a second edge adjacent to the first edge of the first sheet 21. Meanwhile the second sheet 22 and the third sheet 23 are kept spaced with the first sheet 21 and secured with each other, so as to form an expandable holding space with the first sheet 21. The first expandable part 24 and the second expandable part 25 can be formed by means of pressing. Certainly, the second sheet 22 and the third sheet 25 can also be secured to each other by means of hooking. FIGS. 3(a) and 3(b) illustrate other preferred embodiments of the present invention of paper holders 30. The paper holder 30, similar to that shown in FIGS. 2(a) and 2(b), includes a first sheet 31, a second sheet 32, a first expandable part disposed 34 between the first sheet 31 and second sheet 32, a third sheet 33, a second expandable part (not shown) disposed between the first sheet 31 and the third sheet 33. The third sheet 33 further includes a hooked opening 331, the second sheet 32 further includes a hooking part 321 engaged in the hooked opening 331. Therefore, the second sheet 32 and the third sheet 33 are foldable, so as to form an expandable holding space with each face of the first sheet 31. The first sheet 31, the second sheet 32, the third sheet 33, the first expandable part 34 and the second expandable part are of a unity. Hence it is easy to manufacture according to the present invention and it could also reduce the cost

[0025]FIG. 4 illustrates other preferred embodiment of the present invention of a portfolio. The portfolio includes a first sheet 41, a second sheet 42, a third sheet 43, a fourth sheet 44, a first expandable part 45 disposed between the first sheet 41 and second sheet 42, a second expandable part 46 disposed between the first sheet 41 and third sheet 43, and a third expandable part (not shown) disposed between the first sheet 41 and fourth sheet 44. The second sheet 42 and the third sheet 43 keep respectively extended from a first edge and a second edge opposite to the first edge of the first sheet 41. The fourth sheet 44 keeps extended from a third edge of the first sheet 41. Meanwhile the second sheet 42, the third sheet 43 and the fourth sheet 44 are kept spaced with the first sheet 41, and the second sheet 42 and the third sheet 43 are simultaneously secured with the fourth sheet 44, so as to form an expandable holding space with the first sheet 41. Certainly, the first sheet 41, the second sheet 42, the third sheet 43, the fourth sheet 44, the first expandable part 45, the second expandable part 46 and the third expandable part are of a unity, too.

[0026]FIG. 5 illustrates other preferred embodiment of the present invention of a diary. The diary includes a first sheet 51, a second sheet 52, a first expandable part 54 disposed between the first sheet 51 and second sheet 52, a third sheet 53, a second expandable part 55 disposed between the first sheet 51 and the third sheet 53. The second sheet 52 and the third sheet 53 respectively keep extended from a first edge and a second edge adjacent to the first edge of the first sheet 51. Meanwhile the second sheet 52 and the third sheet 53 are kept spaced with the first sheet 51 and secured with each other, so as to form an expandable holding space with the first sheet 51. The first expandable part 54 and the second expandable part 55 can be formed by means of pressing. Certainly, the second sheet 52 and the third sheet 55 can also be secured to each other by means of hooking. It is really a useful invention. According to FIGS. 2-5, we can catch on to what benefits of the present invention are.

[0027] While the invention has been described in terms of what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention need not to be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures. 

What is claimed is:
 1. An expandable packing device comprising: a first sheet; a second sheet kept extended from a first edge of said first sheet; a first expandable part disposed between said first sheet and second sheet; a third sheet kept extended from a second edge of said first sheet adjacent to said first edge; a second expandable part disposed between said first sheet and said third sheet, wherein said second sheet and said third sheet are kept spaced with said first sheet and secured with each other, so as to form an expandable holding space with said first sheet.
 2. The expandable packing device according to claim 1 wherein said expandable packing device is a paper holder.
 3. The expandable packing device according to claim 1 wherein said expandable packing device is a portfolio.
 4. The expandable packing device according to claim 1 wherein said expandable packing device is a diary.
 5. The expandable packing device according to claim 1 wherein said expandable packing device is a PP file.
 6. The expandable packing device according to claim 1 wherein said first expandable part and said second expandable part are formed by means of pressing.
 7. The expandable packing device according to claim 1 wherein said second sheet and said third sheet are secured to each other by means of hooking.
 8. The expandable packing device according to claim 7 wherein said second sheet further comprises a hooked opening, said third sheet further comprises a hooking part engaged in said hooked opening.
 9. The expandable packing device according to claim 7 wherein said second sheet and said third sheet are foldable, so as to form an expandable holding space with each face of said first sheet.
 10. The expandable packing device according to claim 1 wherein said second sheet and said third sheet are secured to each other by means of hot pressing.
 11. The expandable packing device according to claim 1 wherein said first sheet, said second sheet, said third sheet, said first expandable part and said second expandable part are of a unity.
 12. An expandable packing device comprising: a first sheet; a second sheet kept extended from a first edge of said first sheet; a third sheet kept extended from a second edge of said first sheet opposite to said first edge; a fourth sheet kept extended from a third edge of said first sheet; a first expandable part disposed between said first sheet and second sheet; a second expandable part disposed between said first sheet and third sheet; and a third expandable part disposed between said first sheet and fourth sheet, wherein said second sheet, said third sheet and said fourth sheet are kept spaced with said first sheet, and said second sheet and said third sheet are simultaneously secured with said fourth sheet, so as to form an expandable holding space with said first sheet.
 13. The expandable packing device according to claim 12 wherein said expandable packing device is used in a paper holder.
 14. The expandable packing device according to claim 12 wherein said expandable packing device is a portfolio.
 15. The expandable packing device according to claim 12 wherein said expandable packing device is a diary.
 16. The expandable packing device according to claim 12 wherein said expandable packing device is a PP file.
 17. The expandable packing device according to claim 12 wherein said first expandable part, said second expandable part and said third expandable part are formed by means of pressing.
 18. The expandable packing device according to claim 11 wherein said second sheet and said third sheet are secured by means of hooking.
 19. The expandable packing device according to claim 18 wherein said fourth sheet further comprises plural hooked openings, said second sheet and said third sheet further respectively comprises plural hooking parts respectively engaged in said hooked openings.
 20. The expandable packing device according to claim 12 wherein said second sheet and said third sheet are secured to said fourth sheet by means of hot pressing.
 21. The expandable packing device according to claim 12 wherein said first sheet, said second sheet, said third sheet, said fourth sheet, said first expandable part, said second expandable part and said third expandable part are of a unity.
 22. An expandable packing device comprising: a first sheet; a second sheet kept extended from a first edge of said first sheet; a third sheet kept extended from a second edge adjacent to said first edge of said first sheet; a first expandable part disposed between said first sheet and second sheet; a fourth sheet kept extended from a third edge of said first sheet; a fifth sheet kept extended from a fourth edge of said first sheet; a second expandable part disposed between said first sheet and third sheet, wherein said second sheet and said third sheet are kept spaced with said first sheet and secured with each other, so as to form an expandable holding space with said first sheet; a third expandable part disposed between said first sheet and fourth sheet; and a fourth expandable part disposed between said first sheet and fifth sheet, wherein said fourth sheet and said fifth sheet are kept spaced with said first sheet and secured with each other, so as to form an expandable holding space with said first sheet. 